42661072113 has 16 divisors (see below), whose sum is σ = 63729564096. Its totient is φ = 25156405440.

The previous prime is 42661072087. The next prime is 42661072133. The reversal of 42661072113 is 31127016624.

It is not a de Polignac number, because 42661072113 - 2⁶ = 42661072049 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (42661072133) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17468506 + ... + 17470947.

It is an arithmetic number, because the mean of its divisors is an integer number (3983097756).

Almost surely, 2^42661072113 is an apocalyptic number.

It is an amenable number.

42661072113 is a deficient number, since it is larger than the sum of its proper divisors (21068491983).

42661072113 is a wasteful number, since it uses less digits than its factorization.

42661072113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34939504.

The product of its (nonzero) digits is 12096, while the sum is 33.

Adding to 42661072113 its reverse (31127016624), we get a palindrome (73788088737).

The spelling of 42661072113 in words is "forty-two billion, six hundred sixty-one million, seventy-two thousand, one hundred thirteen".